flus - free
- forced-air quenching
- forced-convection flow
- forced-feed lubrication
- forcer
- forces in the roll throat
- fore hammer
- fore plate
- foreblow
- forecast
- forehand method
- forehand technique
- forehand welding
- forehearth
- forehearth mixing ladle
- forehearth operator
- foreign atom
- foreign coal
- foreign impurities
- foreign particle
- foreign-ore practice